From a6b047ce31402676468a805a0f4fbb6e0b1cff0a Mon Sep 17 00:00:00 2001 From: prascle Date: Wed, 11 May 2011 15:50:41 +0000 Subject: [PATCH] PR: missing doc on generate flat elements --- .../SMESH/input/generate_flat_elements.doc | 12 +++ .../gui/SMESH/input/modifying_meshes.doc | 1 + .../input/tui_generate_flat_elements.doc | 75 +++++++++++++++++++ 3 files changed, 88 insertions(+) create mode 100644 doc/salome/gui/SMESH/input/generate_flat_elements.doc create mode 100644 doc/salome/gui/SMESH/input/tui_generate_flat_elements.doc diff --git a/doc/salome/gui/SMESH/input/generate_flat_elements.doc b/doc/salome/gui/SMESH/input/generate_flat_elements.doc new file mode 100644 index 000000000..36ecea7b8 --- /dev/null +++ b/doc/salome/gui/SMESH/input/generate_flat_elements.doc @@ -0,0 +1,12 @@ +/*! + +\page generate_flat_elements_page Generate flat elements on group boundaries or on faces + +\n These functionalities, used in some mechanics calculations, +allow to generate flat volume elements on the boundaries of a list +of groups of volumes, or on a list of groups of faces. +\n These functionalities are only available in python scripts. + +
See a sample TUI Script of a \ref tui_double_nodes_on_group_boundaries "Generate flat elements" operations. + +*/ diff --git a/doc/salome/gui/SMESH/input/modifying_meshes.doc b/doc/salome/gui/SMESH/input/modifying_meshes.doc index 68248a408..78faaac4b 100644 --- a/doc/salome/gui/SMESH/input/modifying_meshes.doc +++ b/doc/salome/gui/SMESH/input/modifying_meshes.doc @@ -48,6 +48,7 @@ of the selected node or edge.
  • \subpage convert_to_from_quadratic_mesh_page "Convert regular mesh to quadratic", or vice versa.
  • \subpage make_2dmesh_from_3d_page "Generate boundary elements".
    • +
  • \subpage generate_flat_elements_page "Generate flat elements on group boundaries or on faces".
    • \note It is possible to use the variables defined in the SALOME \b NoteBook diff --git a/doc/salome/gui/SMESH/input/tui_generate_flat_elements.doc b/doc/salome/gui/SMESH/input/tui_generate_flat_elements.doc new file mode 100644 index 000000000..eb336888f --- /dev/null +++ b/doc/salome/gui/SMESH/input/tui_generate_flat_elements.doc @@ -0,0 +1,75 @@ +/*! + +\page tui_generate_flat_elements_page Generate flat elements + +
    +\anchor tui_double_nodes_on_group_boundaries +

    Double nodes on groups boundaries

    + +\n Double nodes on shared faces between groups of volumes and create flat elements on demand. +\n The list of groups must describe a partition of the mesh volumes.The nodes of the internal +faces at the boundaries of the groups are doubled. In option, the internal faces are replaced +by flat elements. +\n Triangles are transformed in prisms, and quadrangles in hexahedrons. +\n The flat elements are stored in groups of volumes. + +\n +\n This example represents an iron cable (a thin cylinder) in a concrete bloc (a big cylinder). +The big cylinder is defined by two geometric volumes. + +\code +# geometry + +O = geompy.MakeVertex(0, 0, 0) +OX = geompy.MakeVectorDXDYDZ(1, 0, 0) +OY = geompy.MakeVectorDXDYDZ(0, 1, 0) +OZ = geompy.MakeVectorDXDYDZ(0, 0, 1) +Vertex_1 = geompy.MakeVertex(50, 0, 0) +Cylinder_1 = geompy.MakeCylinder(O, OX, 10, 500) +Cylinder_2 = geompy.MakeCylinder(Vertex_1, OX, 100, 400) +Vertex_2 = geompy.MakeVertex(-200, -200, -200) +Vertex_3 = geompy.MakeVertex(250, 200, 200) +Box_1 = geompy.MakeBoxTwoPnt(Vertex_2, Vertex_3) +Cut_1 = geompy.MakeCut(Cylinder_2, Cylinder_1) +Partition_2 = geompy.MakePartition([Cut_1], [Box_1], [], [], geompy.ShapeType["SOLID"], 0, [], 0) +Fuse_1 = geompy.MakeFuse(Partition_2, Cylinder_1) +Partition_1 = geompy.MakePartition([Fuse_1], [Cylinder_1], [], [], geompy.ShapeType["SOLID"], 0, [], 0) +[Solid_1,Solid_2,Solid_3] = geompy.SubShapes(Partition_1, [53, 2, 30]) +[Face_1,Face_2] = geompy.SubShapes(Partition_1, [37, 20]) + +# meshing (linear tetrahedrons here, but other elements are OK) + +Mesh_1 = smesh.Mesh(Partition_1) +BLSURF = Mesh_1.Triangle(algo=smesh.BLSURF) +BLSURF_Parameters = BLSURF.Parameters() +BLSURF_Parameters.SetPhysicalMesh( 0 ) +BLSURF_Parameters.SetGeometricMesh( 1 ) +BLSURF_Parameters.SetAngleMeshS( 16 ) +BLSURF_Parameters.SetAngleMeshC( 16 ) +GHS3D_3D = Mesh_1.Tetrahedron(algo=smesh.GHS3D) +isDone = Mesh_1.Compute() + +# relevant groups of volumes and faces + +Solid_1_1 = Mesh_1.GroupOnGeom(Solid_1,'Solid_1',SMESH.VOLUME) +Solid_2_1 = Mesh_1.GroupOnGeom(Solid_2,'Solid_2',SMESH.VOLUME) +Solid_3_1 = Mesh_1.GroupOnGeom(Solid_3,'Solid_3',SMESH.VOLUME) +Face_1_1 = Mesh_1.GroupOnGeom(Face_1,'Face_1',SMESH.FACE) +Face_2_1 = Mesh_1.GroupOnGeom(Face_2,'Face_2',SMESH.FACE) + +\endcode + +\n Here, the 3 groups of volumes [Solid_1_1, Solid_2_1, Solid_3_1] constitute a partition of the mesh. +The flat elements on group boundaries and on faces are built with the following code. +\n If the last argument (boolean) in DoubleNodesOnGroupBoundaries is set to 1, +the flat elements are built, otherwise, there is only a duplication of the nodes. + +\code +Mesh_1.DoubleNodesOnGroupBoundaries([Solid_1_1, Solid_2_1, Solid_3_1], 1) + +Mesh_1.CreateFlatElementsOnFacesGroups([Face_1_1, Face_2_1]) +\endcode + +\n To observe the flat element groups, save the resulting mesh on a Med file and reload it. + +*/ -- 2.39.2